Drain-fitting



W. F. l. LUTZ.

DRAINl FITTING'. APPLICATION FILED- JAN. I6. l9l8.

eras

WILLIAM F. J. Ln'rz, or CHICAGO, ILLINOIS. `i

nRArN-FI'TTING.

To all 'whom t may concern.

Vso

Be it known that I, WILLIAM F. J. LUTZ, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and vuseful Improvements in Drain-Fittings; and

l do hereby declare'that the following is a full, clear, and exact description thereof, reterence being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification. Y

This invention relates to a novel drain tting'and ybackwater cap and also to a novel closure for fioor drains, clean-out fittings and.

traps of all kinds, and the invention consists in the combination andar-rangement of the parts shown in the drawings and described in the specification, and is pointed out in the appended claim. l

The, purpose of. the invention as applied to fioor drains is to Vproduce an exceedingly simple and effective drain device through which water may be directed to an underneath drain pipe; to provide a novel means of assembling a screen in such drain fittings,

and to provide a simple and economical means of attaching the cap or closure to the fitting in such manner as to prevent leakage, due to back-water pressure between the fitting and cap, and further so constructed and arranged as to reliably clamp the closure or cap of the fitting by meanswhich permits the cap vto be readily detached from the fitting. In respect to the cap or closure the purpose of the invention is to provide a novel interlocking connection between the cap and the mouth of the fitting which it closes such as to tightly clamp the cap in place, while avoiding the necessity of employin screw threads and `thereby avoiding the lijlaility of the cap sticking, as when screw threads are employed.

In the drawings, Y

Figure 1 is an axial vertical section of the fitting and a portionl of the floor.

Fig. 2 is a plan view with cap removed.

Fig. 3 is a bottom view of the cap.

Fig. 4 is an edge elevationfof the cap.

Fig. 5 is a detail inner elevation of the fitting cam lug.

My invention is herein shown as applied to a iioor drain fitting, and in the following description will be pointed out specifically with respect to this embodiment; but it will be understood that the structure, es-

`of the floor.

Specification of Letters Patent. )Pafnljd i9, llg. Application filed January ie,y 191s. serialV No. 212,047.

Vthe Vring-like Vbody of the fitting, usually made of cast iron. Said fitting is 'adapted to fit'closely within an opening in the licor 11 prepared to receive the same, and in pracl tice the fitting is so applied to the floor that its upper edge is flush with the'upper face nally with a number of inwardly directed short lugs 12, two diametrically opposed lugs being hereiny shown, made integral with the wall of' the fitting. Said lugsvare located with theiry lower edges a distancebelow the upper edge of the. fitting ring. The fitting is provided vnear its lower edge with an internal flange or shoulder 14 which may comprise a continuous annular shoulder member yor a number Aof spaced'lugs.

Contained withinV the fitting ring is a screen or grid v15 which normallyV is sup-l ported on the shoulder 14. Said screen or grid is made of such-mesh to prevent the discharge through the drainfitting of articles of substantial dimensions. The screen or grid, which may also be made of Vcast metall, is loosely supported on the flange or shoulder 14. It is provided at its edges with opposing notches 16 which are made of suficient depth as to permit the lugs 12 of the fitting ring to pass therethrough when the screen is lowered into the fitting. When so lowered the screen is angularly turned so as to bring' said notches 16 out of line with the lugs so that the grid or screen cannot be forced by back-water pressure out of the fitting when the cap is removed. By turning the screen to bringthe notches 16 in line with said lugs, however, said screen may be The fitting is provided inter-y fittingdischarges, for the purpose of cleanf ingthe same. The drain fitting is closed at its top by a cap 18 which also is preferably inade of cast metal. The said cap is provided with an axial downward extension 19 of relatively large diameter which fits centrally within the fitting, and the rim 20 of the cap extends radially beyond said extension to bear upon the upper edge of said fitting. The cap is provided beyond its bearing face with an annular downwardly extending lip 21 which surrounds the upper edge of the fitting ring. Preferably there The saidV extention 19 is provided with vdi-V ametrically opposed, generally horizontal' projections 23, each inade of a length considerably greater than the width of the lugs y l2 of the fitting ring. rf "he lugs l2 and said projections 23 are so shaped as to interact Y to clamp in place the capfor cover.

`end the lower faces of the lugs l2 are in- ;clined o rvcarn shaped, while the upper faces To this of the'projections 23 of the extension 19 are in, a like manner inclined or caniined. vrlhe relation ,of said vlugs 12 and thek projections 23 are such that when the cap is fitted on vthe fitting ring the lower ends of the cam faces of the projections 23 are below the inclined or cam faces of the lugs l2. The

v said cap is, of course, placed upon the fitting with the projections 23 out of line with the lugs kl2 and when, therefore, the cap-fis angularly turned the cain 'faces of ythe lugs and projectionsy are brought together and interact as the cover is turned todraw or clamp said cover tightly. down on the upper edge of the fitting ring., or against the packing inediuni 22, if the latter be employed. 1

The upper face of the cap or 'cover may be fashioned in any suitable manner for en gagement by a wrench or implement byV which to turn the cap out'of locking engageinent with the fitting riin, as for instance, said cap may have for this purpose a cross rib or a polygonal engagingV ineniber. In any event the engaging member will preferably be sunken below the level of the top kio face of the cap sov as'to present no obstruction above said level.

l claiin as iny invention: Y A drain fitting 'comprising a lring open at both ends and adapted to lit at its top vend substantially flush with the floor, in an opening in which the ring is seated, saidVV ring being provided interiorly at the top of its open end wi-thlugs,l a cap to cover said Iitting and having a peripheral Yhooked flange to compress and confine av gasket at the. floor level between the flangeand thev .top of ther ring, andlprovided with a downward extension having projections adapted for cani face contact with said lugs to coining lprovided at its bottoin with an internal screen support and a screenV supported there,-

on and having peripheral notchesto pass" over said top interior lugs,*wher`eby the '6o'. press thegasket and to lock the cap on the ring when'thecapis rotated, said'ring bescreen may by rotation be i'eniovedffi'om and V locked within the vring.-y

ln testimony whereof I aflixiny signature in the presence oft-wo witnesses thisftenthv day of January, 1.918. ,Y

wiLLiiii/i ii. i'puiz..

. Witnesses: Y I, v l

lV. L; HALL, t

MARGARET D. Renn 

